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Dataset Title:  CTD data collected on a R/V Sarmiento de Gamboa cruise in the Subtropical
North Atlantic Ocean between January and March 2011 (Microbial associations in
zooplankton project)
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Institution:  BCO-DMO   (Dataset ID: bcodmo_dataset_681423)
Information:  Summary ? | License ? | ISO 19115 | Metadata | Background (external link) | Files | Make a graph
Variable ?   Optional
Constraint #1 ?
Constraint #2 ?
   Minimum ?
   Maximum ?
 depth (m) ?          1.03    30.501
  < slider >
 salinity (pratical salinity units) ?          15.1632    33.2996
 temperature (Celsius) ?          6.2269    14.8045
 fluorescence (volts) ?          0.0012    0.0122
 PAR (uE/m^2/sec) ?          0.177    1080.0
Server-side Functions ?
 distinct() ?
? ("Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.")

File type: (more info)

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 _FillValue NaN;
    Float64 actual_range 1.03, 30.501;
    String axis "Z";
    String bcodmo_name "depth";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String description "Depth at which sample was taken";
    String ioos_category "Location";
    String long_name "Depth";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/DEPH/";
    String positive "down";
    String standard_name "depth";
    String units "m";
  salinity {
    Float32 _FillValue NaN;
    Float32 actual_range 15.1632, 33.2996;
    String bcodmo_name "sal";
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String description "Salinity at depth";
    String long_name "Sea Water Practical Salinity";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/";
    String units "pratical salinity units";
  temperature {
    Float32 _FillValue NaN;
    Float32 actual_range 6.2269, 14.8045;
    String bcodmo_name "temperature";
    String description "Temperature at depth";
    String long_name "Temperature";
    String units "Celsius";
  fluorescence {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0012, 0.0122;
    String bcodmo_name "fluorescence";
    String description "Fluorsence at depth";
    String long_name "Fluorescence";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CPHLPM01/";
    String units "volts";
  PAR {
    Float32 _FillValue NaN;
    Float32 actual_range 0.177, 1080.0;
    String bcodmo_name "PAR";
    Float64 colorBarMaximum 70.0;
    Float64 colorBarMinimum 0.0;
    String description "Photosynthetically Active Radiation";
    String long_name "Downwelling Photosynthetic Photon Radiance In Sea Water";
    String units "uE/m^2/sec";
    String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv";
    String acquisition_description "A profile was conducted using a Seabird sonde.";
    String awards_0_award_nid "542156";
    String awards_0_award_number "OCE-1130495";
    String awards_0_data_url "http://www.nsf.gov/awardsearch/showAward?AWD_ID=1130495";
    String awards_0_funder_name "NSF Division of Ocean Sciences";
    String awards_0_funding_acronym "NSF OCE";
    String awards_0_funding_source_nid "355";
    String awards_0_program_manager "David L. Garrison";
    String awards_0_program_manager_nid "50534";
    String cdm_data_type "Other";
    String comment 
"CTD Data 
  Moisander and Riemann, PIs 
  Version 2 February 2017";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "info@bco-dmo.org";
    String creator_name "BCO-DMO";
    String creator_type "institution";
    String creator_url "https://www.bco-dmo.org/";
    String data_source "extract_data_as_tsv version 2.3  19 Dec 2019";
    String date_created "2017-02-07T22:42:25Z";
    String date_modified "2019-04-04T16:50:36Z";
    String defaultDataQuery "&amp;time&lt;now";
    String doi "10.1575/1912/bco-dmo.681423.1";
    Float64 geospatial_vertical_max 30.501;
    Float64 geospatial_vertical_min 1.03;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2022-08-20T03:08:46Z (local files)
2022-08-20T03:08:46Z https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_681423.html";
    String infoUrl "https://www.bco-dmo.org/dataset/681423";
    String institution "BCO-DMO";
    String instruments_0_acronym "CTD Sea-Bird";
    String instruments_0_dataset_instrument_description "CTD used to sample";
    String instruments_0_dataset_instrument_nid "681432";
    String instruments_0_description "Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.";
    String instruments_0_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/130/";
    String instruments_0_instrument_name "CTD Sea-Bird";
    String instruments_0_instrument_nid "447";
    String instruments_0_supplied_name "CTD";
    String keywords "active, available, bco, bco-dmo, biological, chemical, data, dataset, density, depth, dmo, downwelling, downwelling_photosynthetic_photon_radiance_in_sea_water, earth, Earth Science > Oceans > Ocean Optics > Photosynthetically Active Radiation, Earth Science > Oceans > Ocean Optics > Radiance, Earth Science > Oceans > Salinity/Density > Salinity, erddap, fluorescence, management, ocean, oceanography, oceans, office, optics, PAR, photon, photosynthetic, photosynthetically, practical, preliminary, radiance, radiation, salinity, science, sea, sea_water_practical_salinity, seawater, temperature, water";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "https://www.bco-dmo.org/dataset/681423/license";
    String metadata_source "https://www.bco-dmo.org/api/dataset/681423";
    String param_mapping "{'681423': {'depth': 'flag - depth'}}";
    String parameter_source "https://www.bco-dmo.org/mapserver/dataset/681423/parameters";
    String people_0_affiliation "University of Massachusetts Dartmouth";
    String people_0_affiliation_acronym "UMASSD-SMAST";
    String people_0_person_name "Dr Pia Moisander";
    String people_0_person_nid "564454";
    String people_0_role "Principal Investigator";
    String people_0_role_type "originator";
    String people_1_affiliation "Université de Toulon";
    String people_1_person_name "Mar Benavides";
    String people_1_person_nid "680979";
    String people_1_role "Co-Principal Investigator";
    String people_1_role_type "originator";
    String people_2_affiliation "Woods Hole Oceanographic Institution";
    String people_2_affiliation_acronym "WHOI BCO-DMO";
    String people_2_person_name "Hannah Ake";
    String people_2_person_nid "650173";
    String people_2_role "BCO-DMO Data Manager";
    String people_2_role_type "related";
    String project "Microbial associations in zooplankton";
    String projects_0_acronym "Microbial associations in zooplankton";
    String projects_0_description 
"Description from NSF award abstract:
Nitrogen (N2) fixation is a key biogeochemical process providing new N for the marine ecosystem. Current estimates of the global rates suggest that the inputs and outputs of N are not in balance, leaving an apparent deficiency in N2 fixation in the oceanic N budget. Based on recovery of N2 fixation gene fragments, however, numerous potential N2-fixing microbes are present in the euphotic layer and below, yet evidence for their contribution to N2-fixation is lacking. The goal of this study is to identify and determine the importance of potentially diazotrophic, heterotrophic prokaryotes occupying a previously unstudied niche in the upper ocean.
This project PIs hypothesize that N2 fixation in zooplankton-associated microbial communities is an important source of new N in the open ocean contributing to the oceanic N budget. In oligotrophic, N-limited open ocean waters, zooplankton are faced with the same low N availability in their diets that limits growth of primary producers and heterotrophic microbes in the open ocean. Zooplankton guts would be a particularly suitable environment for heterotrophic N2-fixers as the nitrogenase enzyme is inhibited by oxygen. In many terrestrial insects, N2 fixation by gut microbes serves as a source of N. The aim of this study is to investigate whether similar associations occur in marine zooplankton that live on N-limited phytoplankton. The PIs will investigate specific associations between copepods from N-limited and non-N limited oceanic waters with microorganisms that are potentially or actively fixing N. They will also investigate the fate of this N to study whether the new N is incorporated into the zooplankton host. The main research objectives are to determine whether:
1. diazotrophic microflora exist in copepods and what is their seasonal and spatial variability,
2. microbial communities associated with copepods are actively fixing N2,
3. diazotroph communities contribute to the N nutrition of their zooplankton hosts.
Monthly samples will be collected in the oligotrophic Sargasso Sea, in association with BATS sampling cruises. In addition, experiments and field studies will be conducted in Bermuda during the summer. For comparison to a site that is not severely N limited, and for methods development, additional studies will be carried out in coastal Gulf of Maine waters. Selected copepod species and their fecal pellets will be analyzed for the presence of nifH genes and their expression using cloning and sequencing and Reverse Transcriptase-PCR. Quantitative PCR will be employed to investigate the seasonal distributions of dominant phylotypes. Anaerobic cultivation will be used for the enrichment of the gut microflora. Zooplankton will be incubated with 15N2 to quantify microbial N2 fixation activity and its fate of N through zooplankton overall 15N content and nanoSIMS determination of 15N localization. Products of this study will include novel microbial isolates or consortia, evidence regarding taxa-specific expression of N2 fixation in these microhabitats, and a first estimate for the importance of this process for the oceanic N budget.
This project addresses fundamental issues regarding the sources of oceanic nitrogen and will test hypotheses regarding previously overlooked diazotrophic niches. As open ocean productivity is frequently N limited, characterization of new sources of N will have global impacts.";
    String projects_0_end_date "2016-08";
    String projects_0_geolocation "Sargasso Sea, Eastern and Western North Atlantic.";
    String projects_0_name "Microbial associations in zooplankton: significance for the marine nitrogen cycle";
    String projects_0_project_nid "564455";
    String projects_0_start_date "2011-09";
    String publisher_name "Biological and Chemical Oceanographic Data Management Office (BCO-DMO)";
    String publisher_type "institution";
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "CTD data collected on a R/V Sarmiento de Gamboa cruise in the Subtropical North Atlantic Ocean between January and March 2011 (Microbial associations in zooplankton project)";
    String title "CTD data collected on a R/V Sarmiento de Gamboa cruise in the Subtropical North Atlantic Ocean between January and March 2011 (Microbial associations in zooplankton project)";
    String version "1";
    String xml_source "osprey2erddap.update_xml() v1.3";


Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its selection constraints (external link).

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

Tabledap request URLs must be in the form
For example,
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.

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